JP2018016491A5

JP2018016491A5 -

Info

Publication number: JP2018016491A5
Application number: JP2017089383A
Authority: JP
Filing date: 2017-04-28
Publication date: 2020-04-30
Anticipated expiration: 2037-04-28

Claims

A carry-in port into which the medium is carried in from a printing unit that ejects liquid to print an image on the medium;
A carry-out port that carries out the medium to a post-processing unit that performs post-processing on the medium,
A transport path arranged between the carry-in port and the carry-out port,
An intermediate unit having
In the transport path,
A first transport roller pair group provided with a plurality of transport roller pairs having a drive roller that applies a force in the transport direction to the medium, and a driven roller that is driven to rotate by nipping the medium between the drive roller,
A correction roller pair that is located on the downstream side in the transport direction with respect to the first transport roller pair group, and corrects skew of the medium in the transport direction;
The intermediate unit is characterized by being provided .

The correction roller pair is arranged such that the tip of the medium of the smallest size reaches the carry-out port when the medium of the smallest size that can be conveyed is nipped and conveyed. The intermediate unit shown.

The correction roller pair has a first roller that is rotationally driven in a direction in which the medium is conveyed toward the carry-out port, and a second roller that nips the medium between the first roller and is driven to rotate. ,
The intermediate unit according to claim 2, wherein the first roller has a surface provided with a convex portion capable of making point contact with the medium.

The first transport roller pair group,
Consisting of a plurality of first transport roller pairs driven by the same motor,
An upstream side first transport roller pair arranged on the upstream side in the transport direction with respect to the correction roller pair,
And a downstream side first transport roller pair disposed on the upstream side in the transport direction with respect to the correction roller pair, and disposed downstream from the upstream side first transport roller pair in the transport direction,
The case of correcting a skew, after releasing the transport force applied to the medium I by the first conveying roller pair the upstream, is applied to the medium I by the downstream first conveying roller pair The intermediate unit according to claim 3, wherein the transporting force is released.

Further arranged on the upstream side in the transport direction with respect to the first transport roller pair group, further has a second transport roller pair group in which a plurality of transport roller pairs driven by the same motor are disposed,
The distance between the first conveying roller pair arranged at the most upstream side in the first conveying roller pair group and the second conveying roller pair arranged at the most downstream side in the second conveying roller pair group is the first conveying group. The intermediate unit according to claim 4, wherein the intermediate unit is longer than the distance between the first transport roller pair arranged at the most downstream side in the roller pair group and the correction roller pair.

An intermediate unit according to any one of claims 1 to 5,
A placement unit, which is disposed on the downstream side in the transport direction with respect to the intermediate unit, places the medium carried out from the carry-out port, and post-processes the medium placed on the placement unit. A post-processing unit having a post-processing unit,
A post-processing device comprising:

The medium carried in a transport direction from a printing unit that discharges a liquid and prints an image on the medium, and a drive roller that applies a force in the transport direction to the medium, and the medium between the drive roller. A conveyance roller pair group provided with a plurality of conveyance roller pairs having a driven roller that nips and is driven to rotate,
A mounting unit for mounting the medium,
A post-processing unit that performs post-processing on the medium placed on the placing unit,
Including,
A post-processing apparatus, wherein a correction roller pair that corrects skew of the medium with respect to the transport direction is provided between the transport roller pair group and the placement unit.

Between the transport roller pair group and the placement unit, further has a placement unit side transport roller pair,
The correction roller pair is arranged such that, when nipping and transporting a medium of a minimum size that can be transported , the tip of the medium of the minimum size reaches the placement section side transport roller pair. The post-processing device according to claim 7.

A post-processing device according to any one of claims 6 to 8,
A printing unit that is disposed on the upstream side in the transport direction with respect to the post-processing device and that ejects the liquid to print an image on the medium,
A printing apparatus comprising:

A printing unit that discharges liquid and prints an image on a medium,
Conveyance provided with a plurality of conveyance roller pairs having a drive roller that applies a force in the conveyance direction to the medium sent from the printing unit, and a driven roller that nips the medium between the drive roller and is driven to rotate. A pair of rollers,
A mounting unit for mounting the medium,
A post-processing unit that performs post-processing on the medium placed on the placing unit,
Including,
A printing apparatus, wherein a correction roller pair that corrects skew of the medium with respect to the transport direction is provided between the transport roller pair group and the placement unit.